From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com> |
Cc: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, "Tsunakawa, Takayuki" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>, Michael Meskes <meskes(at)postgresql(dot)org>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Thread-unsafe coding in ecpg |
Date: | 2019-01-24 03:53:24 |
Message-ID: | 18693.1548302004@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
I wrote:
> This suggests that, rather than throwing up our hands if the initial
> _configthreadlocale call returns -1, we should act as though the function
> doesn't exist, and just soldier on the same as before. The code in there
> assumes that -1 is a can't-happen case and doesn't try to recover,
> but apparently that's over-optimistic.
I pushed a patch to fix that.
It looks to me like the reason that the ecpg tests went into an infinite
loop is that compat_informix/test_informix.pgc has not considered the
possibility of repeated statement failures:
while (1)
{
$fetch forward c into :i, :j, :c;
if (sqlca.sqlcode == 100) break;
else if (sqlca.sqlcode != 0) printf ("Error: %ld\n", sqlca.sqlcode);
if (risnull(CDECIMALTYPE, (char *)&j))
printf("%d NULL\n", i);
else
{
int a;
dectoint(&j, &a);
printf("%d %d \"%s\"\n", i, a, c);
}
}
I know zip about ecpg coding practices, but wouldn't it be a better idea
to break out of the loop on seeing an error?
regards, tom lane
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